Reciprocating vacuum pump
[化] 往复式真空泵
🧩 词语组成解析
[医] 交互的, 往复的
pump
[pʌmp]
n. 抽水机;打气筒;泵;轻软舞鞋;
v. 用泵输送 ;涌出;急速摇晃;盘问;
🗣️ 情景例句
Why?
怎样？
A swine over fat is the cause of his own bane.
猪死都因身过肥；象以齿焚。
I'll give you a call when we are ready to talk about them.
等我们准备好可以谈的时候，我会打电话给你。